I found this recipe about four years ago, and it's definitely my go-to whenever I make ramen :) I've had an itching to make it again, and it makes me happy to see that it's still one of the first things to come up in an "authentic ramen" search. Just be aware that this uses an egg-type noodle, which tastes perfectly fine but some people claim that other types of noodles are superior/more authentic. It really all depends on where you go and who makes it.